hunziker



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June 12, 1923.

F. HUNZIKER CLOSURE FOR RECEPTACLES Filed March 30. 1921 2 Sheets-Shoat 2 ///l./////?//////IA g ELM I//////////l!///// I Patented June 12, 1923.

' FRANZ HUNZIKER, or LUCERINEL SWITZERLAND.

CLOSURE Iron fA'pplication filed alena, 1921'; i 's nj l rde seeeei (GRANTED armi s 'rnovrsi'ons' mm: ca eraman "3,5921; ai strain; 1,1513" 7 w I H "v 3f, 1

T 0 all whom it may concern ,1 I

Be it known thatI, FRANZ HUNz iK ifR;

citizen of the Swiss Confederation, resiclin'g'f' W at Casimir Pfyfi'erstrasse No.' 20, Lucerne, 5 Switzerland; have invented, new and useful Ini'provernent's in Closures for Receptacles for which I have filed applicationsin Greatv ritain July 6,19:20,"ancljiGerinany"Januf ary 9; 1918), of which the following is 10 specification. 7 In the case ofoil level indicators; sight feed lubricators and other appliances for easily penetrable fluicls, such as 'o-ils, petro- V leunra ncl such like, a perfectly impenetrable and durable packing between the 'transpar ent fluid container orfsliow glass and the connecting parts has not hitherto been o'btainable; Experience v has shown "that in time certain fluiclspenetrate or destroy the packing rings made of'leather rubbergcork' ancl'such like for the glasses hithertofused. The packing rings, moreover easily: get out of order or become damaged when they are soaked on loosening the connection for the purpose of filling, emptying or cleaning the container, f :In order to overcome these difficulties; ef-j fortshave been made to dispense with special packingby grinding together the'trans parent containersmacle of'glasswith their? unions. Apart from the clifficult ma-ex pensive construction the problem was only partly solved thereby and then only. for certain purposes; e., g. for glass bottles with glass stoppers. j i 1 According to the present invention," the transparent fluid container or'showvfglass is made; fro-In elastic, transparent material, suitable for packingysuch as; for instance c'ell'u'loicl or cellon anclis connected clirect'to' the'unions under pressure thus without the" intervention of special packing whereby the elastic material of the container Inakes a! perfectly durable anclt impenetrable joint with the unions and without breakingout, even when frequently unfastenecl. 5 In the accompanying"drawings in which various forms of my invention are illustrated, I

Fig. 1 shows a flat mouth 1 of thetransparent container 2, to the width of the thickness of plate-whichis pressed against a flat union 3.

RECEPTAGLESL; a;

. a nn';-a? 1g.i2 t e plate]of'thejontfltamer 4" by the mouth is somewhat*pOint Qf outer or "inn'erFbe'vel only as a fiuid tight =Fig; 5' shows a mouth roiintlecl 'ofi" "I Walling" 15 which fits into a conical groove-"75.;

16 on theunion'l7 ancl comesintocontact v with same 'at2Po-intS 18 and l9,,-whidhi onslight pressure, are transformed) into thin? fluid-tight surfaces. this case also a clouble-fiuicltightsurface isobtained..' The so, i I I rounded off -wal1ing-h'as'- the advantages"; 1'

Compared ther V forms, most easily fitted,'m0st fluicl-ti lhtia -h '9reatest flurabilityg-fl i Fig. Got the drawing gh ianiexami S5 ple an oil-levelfindicat'q i; ,incon;

formity: with the 'inventionpwith a jLsha peolgauge tube 21,- sea'ting nipple 22, pressure: s'crew 23ancl olosingfcap.ZLi-Theseating nipple 22 i's'provi'de'ol with longitudinal ancl '90 a transverse holes '25 and 26 resp'ectively ioi" the passage' of'the"oil. This applian'ce" can also be used fontlraining o ff'the'ioil by' means of taking out the gauge *tube i2l 'fr'om its seating arrangement-22 and 23;. Its}; I I

fluid-tight portions are; formed in accordance tight 'surface with the front-'si'de dfthe mou't-hthe transparent container may also be made te' make/a; fluid-tight, contactbe- 1'00 tween the inner or outer wallsurfacesa'ntl transparent container thereby easily clings 1 closely to the union by rneans of the great 35, 4 No packing or any special method of fixing is provided for the gauge tube.

Fig. Sshows a fluid level indicator similar to Fig. 7. The transparent gauge tube 38 016 this is, however, firmly and tightly v fittedover a tube seating, cast. in one piece,

with or. fixed to the container by its lower horizontal. arm. For the purpose of strengthening the gauge tube, a collar may be fitted round its junction end.

In accordance with the invention, straight I or bent transparent gauge tubes can also be firmly. and sightly fitted, without the use of packing, in an aperture. of the wall of the container. or a junction piece on the latter or on a straight or bent. tube seating on the container.

In'the case of closed fluidcontainers, possible also under pressure, the gauge tubes can still be fitted to the container in the same or a. similar. manner.

It is also-possible, in a similar manner as in thecase of fiuidlevel indicators, to improve thetightening of the-transparent vessels. of other. apparatus such asfor. in-

. stance, the supply reservoir and. the show glass-oi sight teed lubricators in respect of which the tightening has hitherto l'eitmuch to.be desired.

Fig. 9 shows by way ofexample, a sightfeed lubricator, the transparent. supply reservoir and} theshow glassof which, arev tight.- enedrinaceordance with the invention. The

supply reservoir 40 is in this case formed.

of transparent celluloid orcellon in the shapeof a calix. The metal parts go below throughanaperture 41 in the bottom of the cup-reservoir 4-0.. The tightening at the spot where'the drip takesplace is effected by means otscrewing up the reservoir without the L1$61 0f1 any kindoii'packing whatsoever. The show. glass is firmly and tightly fitted outside overthefbase; 4301": the sight lubricator. This gives for the bases avery simple,

easy and yet substantial piece and a large.

a surface for. the show glass, which is quite smooth outside. and does not favour the settling of dust and dirt like the smaller glass which rendered observation very difficult, hitherto fitted into the base. In this manner, besides the two packings, two screw threads are also saved, as compared with previous types.

Fig. 10 shows a sight feed lubricator in the case of which the transparent reservoir and the transparent closing of the drip chamber are produced from a single piece 44, and, without the use of any packing, are firmly and tightly fittedover the base of thesight feed lubricator. very simple and one-piece lower tightening,arrangement is thereby obtained.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim and wish to secure by Letters Patent in the United States is 1. Transparent closing tor easily penetrable fluids such as oil, petroleum, and

such like, characterized by the circumstance that same consists of elastic transparent material so that it can bemade tight by pressure against the connecting body without the use of packing material.

2. Transparent closing, inaccordancewith claim 1. characterized by the circumstance that it. consists of celluloid.

3. Transparent closing, in accordance wlth claim. 1, characterized by the circumstance that. it. consists of noninflammable,

celluloid which is known in, commerce under the names of cellon, cellonite, etc.

4:. Transparent closing in accordance with.

claim 2, characterized by the circumstance that, inthe case of fluid level indicators it consists of a tube which is firmly and-tightly connected to'a duct with which the container is provided.

5.. A container embodying an element and.

a'second element including a wall of elastic. and transparent material, the said wall being pressed against the first-named element,

to form a fluid-tightjoint therebe'tween.

6. A container embodying an element. and:

a second element including a wall of elastic and. transparent material, the edge of said wall being pressed against the first named element to form a. fluid-tight joint. therebertween.

In witness whereof I afiix my signature.

FRANZ HUNZIKER';

lVitnesses M. JUND, E. L. DAoHs. 

